	// validasi label tandan
	var label_tandan_validator = function(label){
		//		XXXXXXXXX/YYYYYYYY/YEAR-MO-DA
		return /^(.{1,14})\/(.{1,8})\/(\d{4}\-\d{2}\-\d{2})$/.test(label);
	}

	$.validator.addMethod("label_tandan", function(value, element) {
		return value != '' && label_tandan_validator(value);
	}, "Label tandan tidak valid.");